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项目作者： akosbrachna

项目描述 ：
Cable tester
高级语言： Eagle
项目地址: git://github.com/akosbrachna/cable_tester.git
创建时间： 2017-06-25T17:29:04Z
项目社区：https://github.com/akosbrachna/cable_tester
开源协议：
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cable_tester

Simple cable tester for checking CAT network cables. It can check wiring issues as well as cable length.

Wiring mismatch testing is based on voltage division.

Cable length measurement is based on signal reflection.

The microcontroller is a PIC18F45k50. This model is used because it has a CTMU unit that enables the
microcontroller to measure nanosecond short times which is required for cable length measurement.
The C program was written in MPLAB IDE.

The SMD circuit was designed in Eagle CAD circuit designer. The PCB is double-layered.
Future plan is to add another comparator and make cable length measurement on all 4 pairs.

Master circuit schematic:

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Remote circuit schematic:

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